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| author | Li RongQing <lirongqing@baidu.com> | 2026-10-06 13:58:20 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-10-08 10:44:21 -0700 |
| commit | b056ca4d3742d0769f91137bb1ce3215428398f7 (patch) | |
| tree | 9c0c42b1bbfa6218f34ee241a308774b4b4f1893 /tools/lib/python/kdoc/python_version.py | |
| parent | 726be6a0e81ac603b34a5953623bb39c86cf495a (diff) | |
| download | linux-next-b056ca4d3742d0769f91137bb1ce3215428398f7.tar.gz linux-next-b056ca4d3742d0769f91137bb1ce3215428398f7.zip | |
net/mlx5e: Order ICOSQ cc update after CQ doorbell
mlx5e_poll_ico_cq() requires sq->cc to be updated only after
mlx5_cqwq_update_db_record(), otherwise a CQ overrun may occur.
The current implementation updates sq->cc before the CQ doorbell
record, violating this ordering requirement.
Update the CQ doorbell record first and use dma_wmb() before updating
sq->cc. This ensures that the CQ space is released to the device
before the corresponding ICOSQ consumer index is updated by software.
Fixes: fd9b4be8002c ("net/mlx5e: RX, Support multiple outstanding UMR posts")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Daniel Machon <daniel.machon@microchip.com>
Link: https://patch.msgid.link/20261006105820.257208-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/lib/python/kdoc/python_version.py')
0 files changed, 0 insertions, 0 deletions